Teledyne Lecroy Frontline 802.11, Руководство по аппаратному и программному обеспечению

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If you want to look at just one control signal:
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Check the box for the signal.
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Uncheck all the other boxes.
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Choose to search for an event where one or more signals changed.
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The analyzer notes the state of the selected signal at the point in the buffer where the cursor is,
search the buffer, and stop when it finds an event where RTS changed state.
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If the end of the buffer is reached before an event is found, the analyzer tells you that no matches
were found.
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Searching for events where control signals changed state from off to on, or vice versa, is most useful if the
signals are usually in one state, and you want to search for occasions where they changed state.
For example:
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If DTR is supposed to be on all the time but you suspect that DTR is being dropped
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Tell the analyzer to look only at DTR by checking the DTR box and unchecking the others
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Do a search for where one or more control signals changed from on to off.
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The analyzer would search the DTR signal and stop at the first event where DTR dropped from on to off.
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Searching for an Exact State
To search for an exact state means that the analyzer finds events that match exactly the state of the control
signals that you specify.
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First, choose to search for an event where your choices exactly describe the state.
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This changes the normal check boxes to a series of radio buttons labeled On, Off and Don’t Care for
each control signal.
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Choose which state you want each control signal to be in.
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Choose Don’t Care to have the analyzer ignore the state of a control signal.
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When you click Find Next, the analyzer searches for an event that exactly matches the conditions
selected, beginning from the currently selected event.
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If the end of the buffer is reached before a match is found, the analyzer asks you if you want to
continue searching from the beginning.
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If you want to be sure to search the entire buffer, place your cursor on the first event in the buffer.
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Select one of the four radio buttons to choose the condition that must be met in the search
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Select one or more of the checkboxes for Pin 1, 2, 3, or 4.
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Or, Select one or more of the checkboxes for Request to Send ( RTS ), Clear to Send ( CTS ), Data Set
Ready ( DSR ), Data Terminal Ready ( DTR ), Carrier Detect ( CD ), and Ring Indicator ( RI ).
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Click Find Next to locate the next occurrence of the search criteria or Find Previous to locate an
earlier occurrence of the search criteria.
Chapter 5 Navigating and Searching the Data TELEDYNE LECROY
Frontline 802.11 Hardware & Software User Manual 161